From: Rahul Jain <rahul.jain@samsung.com>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
Amit Khatri <amit.khatri@samsung.com>,
Rahul Jain <rahul.jain@samsung.com>
Subject: [PATCH] iw:Fix memory leak if nla_put fails
Date: Fri, 27 Nov 2015 15:07:21 +0530 [thread overview]
Message-ID: <1448617041-20120-1-git-send-email-rahul.jain@samsung.com> (raw)
From: Amit Khatri <amit.khatri@samsung.com>
Avoid memory leak because of nla_put_failure
Signed-off-by: Rahul Jain <rahul.jain@samsung.com>
Signed-off-by: Amit Khatri <amit.khatri@samsung.com>
---
coalesce.c | 7 ++++++-
wowlan.c | 33 +++++++++++++++++++++++++++------
2 files changed, 33 insertions(+), 7 deletions(-)
diff --git a/coalesce.c b/coalesce.c
index 36dcaef..822da4f 100644
--- a/coalesce.c
+++ b/coalesce.c
@@ -124,7 +124,8 @@ static int handle_coalesce_enable(struct nl80211_state *state,
nla_nest_end(msg, nl_pat);
free(mask);
free(pat);
-
+ pat = NULL;
+ mask = NULL;
if (!next_pat)
break;
cur_pat = next_pat;
@@ -155,6 +156,10 @@ static int handle_coalesce_enable(struct nl80211_state *state,
err = 1;
goto close;
nla_put_failure:
+ if (pat)
+ free(pat);
+ if (mask)
+ free(mask);
err = -ENOBUFS;
close:
fclose(f);
diff --git a/wowlan.c b/wowlan.c
index e0cf316..c674e2c 100644
--- a/wowlan.c
+++ b/wowlan.c
@@ -89,7 +89,11 @@ static int wowlan_parse_tcp_file(struct nl_msg *msg, const char *fn)
if (!pkt)
goto close;
- NLA_PUT(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, len, pkt);
+ if (nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, len,
+ pkt) < 0) {
+ free(pkt);
+ goto nla_put_failure;
+ }
free(pkt);
} else if (strncmp(buf, "data.interval=", 14) == 0) {
NLA_PUT_U32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
@@ -97,13 +101,24 @@ static int wowlan_parse_tcp_file(struct nl_msg *msg, const char *fn)
} else if (strncmp(buf, "wake=", 5) == 0) {
unsigned char *pat, *mask;
size_t patlen;
-
if (parse_hex_mask(buf + 5, &pat, &patlen, &mask))
goto close;
- NLA_PUT(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
- DIV_ROUND_UP(patlen, 8), mask);
- NLA_PUT(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
- patlen, pat);
+ if (nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
+ DIV_ROUND_UP(patlen, 8), mask) < 0) {
+ free(mask);
+ free(pat);
+ mask = NULL;
+ pat = NULL;
+ goto nla_put_failure;
+ }
+ if (nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
+ patlen, pat) < 0){
+ free(pat);
+ free(mask);
+ pat = NULL;
+ mask = NULL;
+ goto nla_put_failure;
+ }
free(mask);
free(pat);
} else if (strncmp(buf, "data.seq=", 9) == 0) {
@@ -300,6 +315,8 @@ static int handle_wowlan_enable(struct nl80211_state *state,
nla_nest_end(patterns, pattern);
free(mask);
free(pat);
+ pat = NULL;
+ mask = NULL;
break;
}
argv++;
@@ -313,6 +330,10 @@ static int handle_wowlan_enable(struct nl80211_state *state,
nla_nest_end(msg, wowlan);
err = 0;
nla_put_failure:
+ if (pat)
+ free(pat);
+ if (mask)
+ free(mask);
nlmsg_free(patterns);
return err;
}
--
1.9.1
next reply other threads:[~2015-11-27 9:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-27 9:37 Rahul Jain [this message]
2016-01-06 11:11 ` [PATCH] iw:Fix memory leak if nla_put fails Johannes Berg
-- strict thread matches above, loose matches on Subject: below --
2015-11-07 11:43 [PATCH] iw: Fix " Amit Khatri
2015-11-07 11:36 Amit Khatri
2015-10-23 22:33 Ola Olsson
2015-11-03 10:28 ` Johannes Berg
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